.register_input{
    input{
    height: 40px;
    width: 86%;
    margin: 20px auto;         //内边距20px
    border: 1px solid #eee;  //边框
    display: block;            //块状
    text-indent: 10px;         //文字内边距
    }
}

.register_btn{
    width: 80%;
    height: 40px;
    margin: 0px auto;
    display: block;
}
